MIL-STD-2042-2B(SH)
polyethylene tube until the BOF tube butts against the jackets of the loose tube furcation cables. Ensure that approximately 12.7 mm (0.5 inch) of the loose tube furcation cable buffer tubes are protruding from the end of the BOF tube (see figure 2E1-3).
NOTE: Only a light coating of epoxy is required.
Loose tube furcation cable
Polyethylene
Tube
Blown Optical Fiber Tube
Buffer
Tube
Kevlar Folded Over Polyethylene
Tube
Evenly Aligned
Buffer Tubes
FIGURE 2E1-3. Furcation cables joined to the BOF tube. Step 10 -Allow the assembly to set until the epoxy hardens.
Step 11 -With the kevlar shears, trim the kevlar strands even with the rear end of the polyethylene tube. Thoroughly mix the two parts of the epoxy together and apply epoxy to the polyethylene tube. Evenly distribute the kevlar strands around the polyethylene tube and fold them flat against the tube sides.
NOTE: Only a light coating of epoxy is required.
Step 12 -While the epoxy is still wet, slide the heat shrink tube over the BOF tube and the polyethylene tube. Center the heat shrink tube over the polyethylene tube. Ensure that the heat shrink tube covers at least
12.7 mm (0.5 inch) of the loose tube furcation cables and BOF tube.
Step 13 -CAUTION: Do not overheat the loose tube furcation cables. Prolonged exposure of the loose tube furcation cable jackets to temperatures above 160oC (320oF) may damage the furcation cable jackets. Discontinue heating of the sleeve and allow the loose tube furcation
cable jackets to cool before reheating if the furcation cable jackets show any signs of bubbling.
Holding the heat gun approximately 100 mm (4 in) away, heat evenly from the center to the ends around the entire sleeve. Heat until the tube has shrunk to a snug fit around the complete assembly (see figure
2E1-4).
2E1-4 METHOD 2E1
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